Abstract: A preparation method and an application of a tailings-based zeolite@carbon dots-titanium dioxide (CDs-TiO2) composite photocatalyst are provided, which relates to the field of solid waste utilization technologies. The preparation method includes performing an acidification treatment on tailings powder and then roasting to obtain modified tailings powder; adding the modified tailings powder and titanium dioxide into lye to obtain mixed suspension; stirring and aging the mixed suspension under ultraviolet irradiation to obtain an aged suspension, performing a hydrothermal reaction on the aged suspension to obtain a product, filtering, washing and drying the product to obtain the tailings-based zeolite@CDs-TiO2 composite photocatalyst.

Abstract: The present teachings provide a blood purification apparatus including a drain-liquid temporary chamber that stores drain liquid drained from a blood purifier that purifies blood of a patient, a first drain-liquid drain line through which the drain liquid flows into the drain-liquid temporary chamber, a second drain-liquid drain line through which the drain liquid stored in the drain-liquid temporary chamber is drained to an outside of the apparatus, a draining unit provided to the second drain-liquid drain line and that drains the drain liquid stored in the drain-liquid temporary chamber to the outside of the apparatus, a remaining-amount-detecting unit that detects an amount of drain liquid remaining in the drain-liquid temporary chamber, a judging unit that judges whether or not a reference remaining amount is reached by the drain liquid in the drain-liquid temporary chamber from a result of detection by the remaining-amount-detecting unit, and a control unit that controls the draining unit.

Abstract: A centrifugal degasser of an air-oil mixture of a turbine engine includes a hollow shaft extending along an X axis and a pinion for rotating the hollow shaft, and an annular chamber for centrifugal separation of the mixture. The chamber is arranged around the hollow shaft and forms a fluid passage area, an inlet of which is oriented axially for feeding the chamber with the mixture, and a first outlet of which is oriented radially inwards for the outlet of the de-oiled air separated from said mixture. The chamber also includes at least one second oil outlet oriented radially outwards and configured for discharging the oil separated from said mixture to the outside of the degasser. The chamber and the pinion form a single piece.

Abstract: Methods and systems for electrochemical treatment of fertigation water for use and for recycling in agricultural systems such as in controlled environment agricultural systems.

Abstract: Water purification occurs under the influence of cold plasma obtained in water, which has a two-phase state, in which water and the smallest bubbles filled with gases dissolved in water are simultaneously present in the turbulence zone. The plasma is ignited inside the gas bubbles when exposed to an electric high-voltage nanosecond pulse. Since the turbulence zone located behind the flow body is saturated-saturated with fine bubbles, the plasma discharge in the bubbles becomes voluminous and diffuse in consistency. The combination of the hydrodynamic effect on water by the flow body and the generation of reactive oxygen species (ROS) in a volumetric plasma discharge in the turbulence zone causes a synergistic effect that increases the efficiency of water treatment.

Abstract: The invention discloses a method and a device for treating cyanobacteria in a water area based on the principle of biological competition, the method comprising: finding an area where cyanobacteria most easily accumulate, i.e. a concave bank of a water area, and setting up an algae interception net around the area; quickly and largely clearing the cyanobacteria in the area by means of manual or mechanical catching; planting emerged plants on the shoreline of the water area to fundamentally improve water quality; and additionally, densely arranging treatment tanks in a larger water area to kill the cyanobacteria gradually, and collecting dead cyanobacteria to prevent them from polluting the water area subsequently; and collecting and treating the tanks regularly for recycling.

Abstract: An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

Abstract: A system for concentrating cells, wherein a syringe comprises a lumen and an axial end comprising a port and a radial end closed to liquid flow. A plunger divides the axial and radial ends, and the syringe is configured to hold a cellular suspension. A filter disposed at the radial end is configured to maintain sterility of the syringe. A cap comprises a vent disposed at the radial end. The plunger is configured to be actuated towards the axial end by air pressure being applied into the radial end and the plunger is configured to be actuated towards the radial end by a vacuum being applied into the radial end.

Abstract: An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

Abstract: A high-efficiency visible-light catalytic material, a preparation method and an application thereof are provided by the present application, relating to the technical field of photocatalytic materials. The present application prepares photocatalytic material Ag@AgCl/CA by compounding Ag@AgCl and calcium alginate gel, and the prepared photocatalytic material is shaped as small particles. The photocatalytic material Ag@AgCl/CA is used to degrade tetracycline antibiotics.

Abstract: A monolithic metal-organic framework (MOF) composite body is disclosed, comprising: MOF crystallites adhered to each other via a binder comprising MOF; and at least 0.15 vol % nanoparticles encapsulated in the MOF body. The nanoparticles have an average particle size corresponding to an average particle diameter in the range 3-200 nm. The nanoparticles may have photocatalytic activity. The MOF composite body is of use for treating water containing an organic dye, the photocatalytic reaction supported by the photocatalytic nanoparticles being a degradation reaction of the organic dye.

Abstract: A water container for purifying water. The water container includes an opening configured to receive water, a container body arranged to enclose the water and a water purifying unit configured to purify the water. The water purifying unit includes an at least partially transparent plate, which includes a coating of metal-oxide nanoparticles on a first side facing the container body, wherein the first side is configured to be in contact with the water, and an ultraviolet light module configured to radiate towards a second side of the at least partially transparent plate such that light from the ultraviolet light module at least partially passes through the at least partially transparent plate. Also, a method for purifying water within a water container.

Abstract: A fluid device includes: a flow main body including a side wall along a first axis and configured to flow a fluid from an inflow portion provided at one side of the first axis toward an outflow portion provided at the other side of the first axis; a plate provided at the other side of the first axis of the flow main body and having a first surface intersecting the first axis; a standing wall extending along the first axis from the first surface toward the one side of the first axis and having a length along the first axis shorter than the side wall; and an ultrasonic element disposed at an outer side of a collection region of the plate and configured to transmit an ultrasonic wave along the first axis when the standing wall and a region surrounded by the standing wall on the first surface are defined as the collection region.

Abstract: Certain exemplary aspects of the present disclosure are directed towards an apparatus for electrostatic fluid filtration. The apparatus utilizing alternating positive and negative electrodes in conjunction with filter media there between to filter contaminants from a fluid flow.

Abstract: The present invention relates to an active substance for sewage treatment and dewatering of solid domestic wastes landfills. Besides, the present invention also relates to a method for producing this active substance. More specifically, the present invention relates to use of this active substance for sewage treatment and dewatering of solid domestic wastes landfills to remove organic impurities, organogenic elements, solid and radioactive metals.

Abstract: An aqueous modified acid composition for industrial activities, said composition comprising: an alkanolamine and strong acid in a molar ratio of not less than 1:15, preferably not less than 1:10; it can also further comprise a metal iodide or iodate. Said composition demonstrates advantages over known conventional acids and modified acids.

Abstract: A magnet positioning system for positioning magnets inside pipes includes a first stackable paddle that includes slots for accepting magnets and a second stackable paddle that includes a metal component for attracting the magnets and securing the magnets in the slots when the paddles are stacked together. Once stacked together, the paddles are inserted into position inside a pipe and the metal component is removed to release the magnets which move toward, and attach to, the inside wall of the pipe. A fluid conduit is positioned between the magnets using a spacer and a fixing agent permanently secures the magnets, fluid conduit, and spacer in place.

Abstract: A carboxymethyl cellulose (CMC) nanohybrid composition comprising carboxymethyl cellulose loaded with metal nanoparticles, such as silver nanoparticles (AgNPs), iron nanoparticles (FeNPs), or silver nanoparticle-doped iron nanoparticles (AgNPs@FeNPs). These compositions can be used to remove contaminants, such as 2,4-dinitrophenol, from wastewater. The compositions are low-cost, eco-friendly, and highly efficient for 2,4-dinitrophenol removal, due to the high surface area to volume ratio and super catalytic effect to remove 2,4-dinitrophenol. The results indicate that the performance of fabricated AgNPs@Fe@CMC nanohybrids objectively is relatively high, and suitable compared to commercial materials.

Abstract: The present disclosure discloses a method for removing chlorinated hydrocarbons in groundwater through step-by-step electrocatalytic dechlorination degradation. A double-chamber electrolyzer reactor is used to carry out step-by-step electrocatalytic dechlorination degradation to remove chlorinated hydrocarbons in groundwater. The double-chamber electrolyzer reactor comprises a cathode chamber, a proton exchange membrane, an anode chamber and an intermediate processing unit, wherein the cathode chamber is separated from the anode chamber through the proton exchange membrane, and the intermediate processing unit is connected between the cathode chamber and the anode chamber through a cathode chamber water outlet, an anode chamber water inlet and pipelines.

Abstract: A disinfection system for treating water. In a specific example, the system treats water prior to its upload to an aircraft or other passenger transportation vehicle. One or more replaceable filters are positioned within a filter chamber housing in order to expose water flowing through the system to filtration treatment.